diff --git a/lib/server.js b/lib/server.js
index 346c495..092e0d8 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -1,10 +1,10 @@
-var util = require('./util');
-var bodyParser = require('body-parser');
-var WebSocketServer = require('ws').Server;
-var url = require('url');
-var cors = require('cors');
+var util = require("./util");
+var bodyParser = require("body-parser");
+var WebSocketServer = require("ws").Server;
+var url = require("url");
+var cors = require("cors");
 
-var app = exports = module.exports = {};
+var app = (exports = module.exports = {});
 
 /** Initialize WebSocket server. */
 app._initializeWSS = function(server) {
@@ -15,13 +15,12 @@ app._initializeWSS = function(server) {
   }
 
   var path = this.mountpath;
-  var path = path + (path[path.length - 1] != '/' ? '/' : '') + 'peerjs';
+  var path = path + (path[path.length - 1] != "/" ? "/" : "") + "peerjs";
 
   // Create WebSocket server as well.
-  this._wss = new WebSocketServer({ path: path, server: server});
+  this._wss = new WebSocketServer({ path: path, server: server });
 
-  this._wss.on('connection', function(socket, req) {
-    if(!req.url) return;
+  this._wss.on("connection", function(socket, req) {
     var query = url.parse(req.url, true).query;
     var id = query.id;
     var token = query.token;
@@ -29,7 +28,12 @@ app._initializeWSS = function(server) {
     var ip = req.socket.remoteAddress;
 
     if (!id || !token || !key) {
-      socket.send(JSON.stringify({ type: 'ERROR', payload: { msg: 'No id, token, or key supplied to websocket server' } }));
+      socket.send(
+        JSON.stringify({
+          type: "ERROR",
+          payload: { msg: "No id, token, or key supplied to websocket server" }
+        })
+      );
       socket.close();
       return;
     }
@@ -40,11 +44,11 @@ app._initializeWSS = function(server) {
           if (!self._clients[key][id]) {
             self._clients[key][id] = { token: token, ip: ip };
             self._ips[ip]++;
-            socket.send(JSON.stringify({ type: 'OPEN' }));
+            socket.send(JSON.stringify({ type: "OPEN" }));
           }
           self._configureWS(socket, key, id, token);
         } else {
-          socket.send(JSON.stringify({ type: 'ERROR', payload: { msg: err } }));
+          socket.send(JSON.stringify({ type: "ERROR", payload: { msg: err } }));
         }
       });
     } else {
@@ -54,7 +58,6 @@ app._initializeWSS = function(server) {
 };
 
 app._configureWS = function(socket, key, id, token) {
-
   var self = this;
   var client = this._clients[key][id];
 
@@ -67,7 +70,9 @@ app._configureWS = function(socket, key, id, token) {
     }
   } else {
     // ID-taken, invalid token
-    socket.send(JSON.stringify({ type: 'ID-TAKEN', payload: { msg: 'ID is taken' } }));
+    socket.send(
+      JSON.stringify({ type: "ID-TAKEN", payload: { msg: "ID is taken" } })
+    );
     socket.close();
     return;
   }
@@ -75,19 +80,21 @@ app._configureWS = function(socket, key, id, token) {
   this._processOutstanding(key, id);
 
   // Cleanup after a socket closes.
-  socket.on('close', function() {
-    self._log('Socket closed:', id);
+  socket.on("close", function() {
+    self._log("Socket closed:", id);
     if (client.socket == socket) {
       self._removePeer(key, id);
     }
   });
 
   // Handle messages from peers.
-  socket.on('message', function(data) {
+  socket.on("message", function(data) {
     try {
       var message = JSON.parse(data);
 
-      if (['LEAVE', 'CANDIDATE', 'OFFER', 'ANSWER'].indexOf(message.type) !== -1) {
+      if (
+        ["LEAVE", "CANDIDATE", "OFFER", "ANSWER"].indexOf(message.type) !== -1
+      ) {
         self._handleTransmission(key, {
           type: message.type,
           src: id,
@@ -95,17 +102,17 @@ app._configureWS = function(socket, key, id, token) {
           payload: message.payload
         });
       } else {
-        util.prettyError('Message unrecognized');
+        util.prettyError("Message unrecognized");
       }
-    } catch(e) {
-      self._log('Invalid message', data);
+    } catch (e) {
+      self._log("Invalid message", data);
       throw e;
     }
   });
 
   // We're going to emit here, because for XHR we don't *know* when someone
   // disconnects.
-  this.emit('connection', id);
+  this.emit("connection", id);
 };
 
 app._checkAllowsDiscovery = function(key, cb) {
@@ -124,17 +131,19 @@ app._checkKey = function(key, ip, cb) {
       this._ips[ip] = 0;
     }
     // Check concurrent limit
-    if (Object.keys(this._clients[key]).length >= this._options.concurrent_limit) {
-      cb('Server has reached its concurrent user limit');
+    if (
+      Object.keys(this._clients[key]).length >= this._options.concurrent_limit
+    ) {
+      cb("Server has reached its concurrent user limit");
       return;
     }
     if (this._ips[ip] >= this._options.ip_limit) {
-      cb(ip + ' has reached its concurrent user limit');
+      cb(ip + " has reached its concurrent user limit");
       return;
     }
     cb(null);
   } else {
-    cb('Invalid key provided');
+    cb("Invalid key provided");
   }
 };
 
@@ -144,18 +153,18 @@ app._initializeHTTP = function() {
 
   this.use(cors());
 
-  this.get('/', function(req, res, next) {
-    res.send(require('../app.json'));
+  this.get("/", function(req, res, next) {
+    res.send(require("../app.json"));
   });
 
   // Retrieve guaranteed random ID.
-  this.get('/:key/id', function(req, res, next) {
-    res.contentType = 'text/html';
+  this.get("/:key/id", function(req, res, next) {
+    res.contentType = "text/html";
     res.send(self._generateClientId(req.params.key));
   });
 
   // Server sets up HTTP streaming when you get post an ID.
-  this.post('/:key/:id/:token/id', function(req, res, next) {
+  this.post("/:key/:id/:token/id", function(req, res, next) {
     var id = req.params.id;
     var token = req.params.token;
     var key = req.params.key;
@@ -168,7 +177,7 @@ app._initializeHTTP = function() {
           self._ips[ip]++;
           self._startStreaming(res, key, id, token, true);
         } else {
-          res.send(JSON.stringify({ type: 'HTTP-ERROR' }));
+          res.send(JSON.stringify({ type: "HTTP-ERROR" }));
         }
       });
     } else {
@@ -177,7 +186,7 @@ app._initializeHTTP = function() {
   });
 
   // Get a list of all peers for a key, enabled by the `allowDiscovery` flag.
-  this.get('/:key/peers', function(req, res, next) {
+  this.get("/:key/peers", function(req, res, next) {
     var key = req.params.key;
     if (self._clients[key]) {
       self._checkAllowsDiscovery(key, function(isAllowed) {
@@ -226,36 +235,36 @@ app._initializeHTTP = function() {
 
   var jsonParser = bodyParser.json();
 
-  this.post('/:key/:id/:token/offer', jsonParser, handle);
+  this.post("/:key/:id/:token/offer", jsonParser, handle);
 
-  this.post('/:key/:id/:token/candidate', jsonParser, handle);
+  this.post("/:key/:id/:token/candidate", jsonParser, handle);
 
-  this.post('/:key/:id/:token/answer', jsonParser, handle);
+  this.post("/:key/:id/:token/answer", jsonParser, handle);
 
-  this.post('/:key/:id/:token/leave', jsonParser, handle);
+  this.post("/:key/:id/:token/leave", jsonParser, handle);
 };
 
 /** Saves a streaming response and takes care of timeouts and headers. */
 app._startStreaming = function(res, key, id, token, open) {
   var self = this;
 
-  res.writeHead(200, {'Content-Type': 'application/octet-stream'});
+  res.writeHead(200, { "Content-Type": "application/octet-stream" });
 
-  var pad = '00';
+  var pad = "00";
   for (var i = 0; i < 10; i++) {
     pad += pad;
   }
-  res.write(pad + '\n');
+  res.write(pad + "\n");
 
   if (open) {
-    res.write(JSON.stringify({ type: 'OPEN' }) + '\n');
+    res.write(JSON.stringify({ type: "OPEN" }) + "\n");
   }
 
   var client = this._clients[key][id];
 
   if (token === client.token) {
     // Client already exists
-    res.on('close', function() {
+    res.on("close", function() {
       if (client.res === res) {
         if (!client.socket) {
           // No new request yet, peer dead
@@ -269,7 +278,7 @@ app._startStreaming = function(res, key, id, token, open) {
     this._processOutstanding(key, id);
   } else {
     // ID-taken, invalid token
-    res.end(JSON.stringify({ type: 'HTTP-ERROR' }));
+    res.end(JSON.stringify({ type: "HTTP-ERROR" }));
   }
 };
 
@@ -284,7 +293,11 @@ app._pruneOutstanding = function() {
       for (var j = 0, jj = offers.length; j < jj; j += 1) {
         var message = offers[j];
         if (!seen[message.src]) {
-          this._handleTransmission(key, { type: 'EXPIRE', src: message.dst, dst: message.src });
+          this._handleTransmission(key, {
+            type: "EXPIRE",
+            src: message.dst,
+            dst: message.src
+          });
           seen[message.src] = true;
         }
       }
@@ -330,7 +343,7 @@ app._removePeer = function(key, id) {
   if (this._clients[key] && this._clients[key][id]) {
     this._ips[this._clients[key][id].ip]--;
     delete this._clients[key][id];
-    this.emit('disconnect', id);
+    this.emit("disconnect", id);
   }
 };
 
@@ -346,11 +359,11 @@ app._handleTransmission = function(key, message) {
   // User is connected!
   if (destination) {
     try {
-      this._log(type, 'from', src, 'to', dst);
+      this._log(type, "from", src, "to", dst);
       if (destination.socket) {
         destination.socket.send(data);
       } else if (destination.res) {
-        data += '\n';
+        data += "\n";
         destination.res.write(data);
       } else {
         // Neither socket no res available. Peer dead?
@@ -362,7 +375,7 @@ app._handleTransmission = function(key, message) {
       // Tell other side to stop trying.
       this._removePeer(key, dst);
       this._handleTransmission(key, {
-        type: 'LEAVE',
+        type: "LEAVE",
         src: dst,
         dst: src
       });
@@ -370,13 +383,13 @@ app._handleTransmission = function(key, message) {
   } else {
     // Wait for this client to connect/reconnect (XHR) for important
     // messages.
-    if (type !== 'LEAVE' && type !== 'EXPIRE' && dst) {
+    if (type !== "LEAVE" && type !== "EXPIRE" && dst) {
       var self = this;
       if (!this._outstanding[key][dst]) {
         this._outstanding[key][dst] = [];
       }
       this._outstanding[key][dst].push(message);
-    } else if (type === 'LEAVE' && !dst) {
+    } else if (type === "LEAVE" && !dst) {
       this._removePeer(key, src);
     } else {
       // Unavailable destination specified with message LEAVE or EXPIRE
diff --git a/package.json b/package.json
index 073ed5f..7fd56ee 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "body-parser": "^1.18.3",
     "express": "^4.16.3",
     "optimist": "~0.6.1",
-    "ws": "~5.2.0",
+    "ws": "6.0.0",
     "cors": "~2.8.4"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
new file mode 100644
index 0000000..9c31d06
--- /dev/null
+++ b/yarn.lock
@@ -0,0 +1,581 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@sinonjs/commons@^1.0.1":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.0.2.tgz#3e0ac737781627b8844257fadc3d803997d0526e"
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/formatio@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+  dependencies:
+    samsam "1.3.0"
+
+"@sinonjs/samsam@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.0.0.tgz#9163742ac35c12d3602dece74317643b35db6a80"
+
+accepts@~1.3.5:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.5.tgz#eb777df6011723a3b14e8a72c0805c8e86746bd2"
+  dependencies:
+    mime-types "~2.1.18"
+    negotiator "0.6.1"
+
+array-flatten@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-1.1.1.tgz#9a5f699051b1e7073328f2a008968b64ea2955d2"
+
+async-limiter@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+
+body-parser@1.18.2:
+  version "1.18.2"
+  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.18.2.tgz#87678a19d84b47d859b83199bd59bce222b10454"
+  dependencies:
+    bytes "3.0.0"
+    content-type "~1.0.4"
+    debug "2.6.9"
+    depd "~1.1.1"
+    http-errors "~1.6.2"
+    iconv-lite "0.4.19"
+    on-finished "~2.3.0"
+    qs "6.5.1"
+    raw-body "2.3.2"
+    type-is "~1.6.15"
+
+body-parser@^1.18.3:
+  version "1.18.3"
+  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.18.3.tgz#5b292198ffdd553b3a0f20ded0592b956955c8b4"
+  dependencies:
+    bytes "3.0.0"
+    content-type "~1.0.4"
+    debug "2.6.9"
+    depd "~1.1.2"
+    http-errors "~1.6.3"
+    iconv-lite "0.4.23"
+    on-finished "~2.3.0"
+    qs "6.5.2"
+    raw-body "2.3.3"
+    type-is "~1.6.16"
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+browser-stdout@1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/browser-stdout/-/browser-stdout-1.3.1.tgz#baa559ee14ced73452229bad7326467c61fabd60"
+
+bytes@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.0.0.tgz#d32815404d689699f85a4ea4fa8755dd13a96048"
+
+commander@2.15.1:
+  version "2.15.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+
+content-disposition@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
+
+content-type@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
+
+cookie-signature@1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
+
+cookie@0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
+
+cors@~2.8.4:
+  version "2.8.4"
+  resolved "https://registry.yarnpkg.com/cors/-/cors-2.8.4.tgz#2bd381f2eb201020105cd50ea59da63090694686"
+  dependencies:
+    object-assign "^4"
+    vary "^1"
+
+debug@2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  dependencies:
+    ms "2.0.0"
+
+debug@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
+depd@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.1.tgz#5783b4e1c459f06fa5ca27f991f3d06e7a310359"
+
+depd@~1.1.1, depd@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
+
+destroy@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
+
+diff@3.5.0, diff@^3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+
+ee-first@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
+
+encodeurl@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
+
+escape-html@~1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
+
+escape-string-regexp@1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+
+etag@~1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
+
+expect.js@*:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/expect.js/-/expect.js-0.3.1.tgz#b0a59a0d2eff5437544ebf0ceaa6015841d09b5b"
+
+express@^4.16.3:
+  version "4.16.3"
+  resolved "https://registry.yarnpkg.com/express/-/express-4.16.3.tgz#6af8a502350db3246ecc4becf6b5a34d22f7ed53"
+  dependencies:
+    accepts "~1.3.5"
+    array-flatten "1.1.1"
+    body-parser "1.18.2"
+    content-disposition "0.5.2"
+    content-type "~1.0.4"
+    cookie "0.3.1"
+    cookie-signature "1.0.6"
+    debug "2.6.9"
+    depd "~1.1.2"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    finalhandler "1.1.1"
+    fresh "0.5.2"
+    merge-descriptors "1.0.1"
+    methods "~1.1.2"
+    on-finished "~2.3.0"
+    parseurl "~1.3.2"
+    path-to-regexp "0.1.7"
+    proxy-addr "~2.0.3"
+    qs "6.5.1"
+    range-parser "~1.2.0"
+    safe-buffer "5.1.1"
+    send "0.16.2"
+    serve-static "1.13.2"
+    setprototypeof "1.1.0"
+    statuses "~1.4.0"
+    type-is "~1.6.16"
+    utils-merge "1.0.1"
+    vary "~1.1.2"
+
+finalhandler@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.1.tgz#eebf4ed840079c83f4249038c9d703008301b105"
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.2"
+    statuses "~1.4.0"
+    unpipe "~1.0.0"
+
+forwarded@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.1.2.tgz#98c23dab1175657b8c0573e8ceccd91b0ff18c84"
+
+fresh@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+
+glob@7.1.2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+growl@1.10.5:
+  version "1.10.5"
+  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+
+he@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
+
+http-errors@1.6.2:
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.6.2.tgz#0a002cc85707192a7e7946ceedc11155f60ec736"
+  dependencies:
+    depd "1.1.1"
+    inherits "2.0.3"
+    setprototypeof "1.0.3"
+    statuses ">= 1.3.1 < 2"
+
+http-errors@1.6.3, http-errors@~1.6.2, http-errors@~1.6.3:
+  version "1.6.3"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.6.3.tgz#8b55680bb4be283a0b5bf4ea2e38580be1d9320d"
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.3"
+    setprototypeof "1.1.0"
+    statuses ">= 1.4.0 < 2"
+
+iconv-lite@0.4.19:
+  version "0.4.19"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
+
+iconv-lite@0.4.23:
+  version "0.4.23"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.23.tgz#297871f63be507adcfbfca715d0cd0eed84e9a63"
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2, inherits@2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+ipaddr.js@1.8.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.8.0.tgz#eaa33d6ddd7ace8f7f6fe0c9ca0440e706738b1e"
+
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+
+just-extend@^1.1.27:
+  version "1.1.27"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-1.1.27.tgz#ec6e79410ff914e472652abfa0e603c03d60e905"
+
+lodash.get@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+
+lolex@^2.3.2, lolex@^2.7.1:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.1.tgz#e40a8c4d1f14b536aa03e42a537c7adbaf0c20be"
+
+media-typer@0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
+
+merge-descriptors@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
+
+methods@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
+
+mime-db@~1.35.0:
+  version "1.35.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.35.0.tgz#0569d657466491283709663ad379a99b90d9ab47"
+
+mime-types@~2.1.18:
+  version "2.1.19"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.19.tgz#71e464537a7ef81c15f2db9d97e913fc0ff606f0"
+  dependencies:
+    mime-db "~1.35.0"
+
+mime@1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
+
+minimatch@3.0.4, minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@0.0.8:
+  version "0.0.8"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
+
+minimist@~0.0.1:
+  version "0.0.10"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
+
+mkdirp@0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  dependencies:
+    minimist "0.0.8"
+
+mocha@*:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.2.0.tgz#6d8ae508f59167f940f2b5b3c4a612ae50c90ae6"
+  dependencies:
+    browser-stdout "1.3.1"
+    commander "2.15.1"
+    debug "3.1.0"
+    diff "3.5.0"
+    escape-string-regexp "1.0.5"
+    glob "7.1.2"
+    growl "1.10.5"
+    he "1.1.1"
+    minimatch "3.0.4"
+    mkdirp "0.5.1"
+    supports-color "5.4.0"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+negotiator@0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
+
+nise@^1.4.2:
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.2.tgz#a9a3800e3994994af9e452333d549d60f72b8e8c"
+  dependencies:
+    "@sinonjs/formatio" "^2.0.0"
+    just-extend "^1.1.27"
+    lolex "^2.3.2"
+    path-to-regexp "^1.7.0"
+    text-encoding "^0.6.4"
+
+object-assign@^4:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+
+on-finished@~2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
+  dependencies:
+    ee-first "1.1.1"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  dependencies:
+    wrappy "1"
+
+optimist@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
+  dependencies:
+    minimist "~0.0.1"
+    wordwrap "~0.0.2"
+
+parseurl@~1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+
+path-to-regexp@0.1.7:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
+
+path-to-regexp@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.7.0.tgz#59fde0f435badacba103a84e9d3bc64e96b9937d"
+  dependencies:
+    isarray "0.0.1"
+
+proxy-addr@~2.0.3:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.4.tgz#ecfc733bf22ff8c6f407fa275327b9ab67e48b93"
+  dependencies:
+    forwarded "~0.1.2"
+    ipaddr.js "1.8.0"
+
+qs@6.5.1:
+  version "6.5.1"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
+
+qs@6.5.2:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
+
+range-parser@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
+
+raw-body@2.3.2:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.3.2.tgz#bcd60c77d3eb93cde0050295c3f379389bc88f89"
+  dependencies:
+    bytes "3.0.0"
+    http-errors "1.6.2"
+    iconv-lite "0.4.19"
+    unpipe "1.0.0"
+
+raw-body@2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.3.3.tgz#1b324ece6b5706e153855bc1148c65bb7f6ea0c3"
+  dependencies:
+    bytes "3.0.0"
+    http-errors "1.6.3"
+    iconv-lite "0.4.23"
+    unpipe "1.0.0"
+
+safe-buffer@5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
+
+"safer-buffer@>= 2.1.2 < 3":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+
+samsam@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
+
+send@0.16.2:
+  version "0.16.2"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.16.2.tgz#6ecca1e0f8c156d141597559848df64730a6bbc1"
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.2"
+    destroy "~1.0.4"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.6.2"
+    mime "1.4.1"
+    ms "2.0.0"
+    on-finished "~2.3.0"
+    range-parser "~1.2.0"
+    statuses "~1.4.0"
+
+serve-static@1.13.2:
+  version "1.13.2"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.13.2.tgz#095e8472fd5b46237db50ce486a43f4b86c6cec1"
+  dependencies:
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    parseurl "~1.3.2"
+    send "0.16.2"
+
+setprototypeof@1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.0.3.tgz#66567e37043eeb4f04d91bd658c0cbefb55b8e04"
+
+setprototypeof@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.0.tgz#d0bd85536887b6fe7c0d818cb962d9d91c54e656"
+
+sinon@*:
+  version "6.1.5"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.1.5.tgz#41451502d43cd5ffb9d051fbf507952400e81d09"
+  dependencies:
+    "@sinonjs/commons" "^1.0.1"
+    "@sinonjs/formatio" "^2.0.0"
+    "@sinonjs/samsam" "^2.0.0"
+    diff "^3.5.0"
+    lodash.get "^4.4.2"
+    lolex "^2.7.1"
+    nise "^1.4.2"
+    supports-color "^5.4.0"
+    type-detect "^4.0.8"
+
+"statuses@>= 1.3.1 < 2", "statuses@>= 1.4.0 < 2":
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
+
+statuses@~1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.4.0.tgz#bb73d446da2796106efcc1b601a253d6c46bd087"
+
+supports-color@5.4.0, supports-color@^5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  dependencies:
+    has-flag "^3.0.0"
+
+text-encoding@^0.6.4:
+  version "0.6.4"
+  resolved "https://registry.yarnpkg.com/text-encoding/-/text-encoding-0.6.4.tgz#e399a982257a276dae428bb92845cb71bdc26d19"
+
+type-detect@4.0.8, type-detect@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+
+type-is@~1.6.15, type-is@~1.6.16:
+  version "1.6.16"
+  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.16.tgz#f89ce341541c672b25ee7ae3c73dee3b2be50194"
+  dependencies:
+    media-typer "0.3.0"
+    mime-types "~2.1.18"
+
+unpipe@1.0.0, unpipe@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
+
+utils-merge@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
+
+vary@^1, vary@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
+
+wordwrap@~0.0.2:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+
+ws@6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.0.0.tgz#eaa494aded00ac4289d455bac8d84c7c651cef35"
+  dependencies:
+    async-limiter "~1.0.0"